Kyle wins.
Absent using this to guarantee the nigh-endless survival of the species, my math suggests that 3^^^3 beats anything. The problem is that the speck rounds down to 0 for me.
There is some minimum threshold below which it just does not count, like saying, “What if we exposed 3^^^3 people to radiation equivalent to standing in front of a microwave for 10 seconds? Would that be worse than nuking a few cities?” I suppose there must be someone in 3^^^3 who is marginally close enough to cancer for that to matter, but no, that rounds down to 0. For the speck, I am going to blink in the next few seconds anyway.
That in no way addresses the intent of the question, since we can just increase it to the minimum that does not round down. Being poked with a blunt stick? Still hard, since I think every human being would take one stick over some poor soul being tortured. Do I really get to be the moral agent for 3^^^3 people?
As others have said, our moral intuitions do not work with 3^^^3.
I think of politics here: trying to guess the electorate’s password. An elected official is rewarded for giving the answer that will get him the most votes. If that happens to be a well-conceived policy decision, that is a happy coincidence.
The hard part about teaching students not to guess the password is teaching teachers not to accept password guesses, and how to distinguish verbal behavior from thought.